Major solar flare measuring X1.3 erupted on April 25, 2014 from Region 2035 located behind the western limb. The event started at 00:17, peaked at 00:27, and ended at 00:38 UTC. Because of the location of this region CME was not Earth directed.
R3 (strong) Radio Blackout, a Type II Radio Emission with estimated velocity of 753 km/s and 10cm Radio Burst lasting 5 minutes, with peak flux of 1100 sfu, were associated with the event.
Space Weather Message Code: ALTTP2
Serial Number: 928
Issue Time: 2014 Apr 25 0117 UTC
ALERT: Type II Radio Emission
Begin Time: 2014 Apr 25 0022 UTC
Estimated Velocity: 753 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
CME forecast. Image credit: NASA Enlil / WSA / GONG
Space Weather Message Code: SUM10R
Serial Number: 616
Issue Time: 2014 Apr 25 0050 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2014 Apr 25 0020 UTC
Maximum Time: 2014 Apr 25 0021 UTC
End Time: 2014 Apr 25 0025 UTC
Duration: 5 minutes
Peak Flux: 1100 sfu
Latest Penticton Noon Flux: 130 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Space Weather Message Code: SUMX01
Serial Number: 99
Issue Time: 2014 Apr 25 0048 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2014 Apr 25 0017 UTC
Maximum Time: 2014 Apr 25 0027 UTC
End Time: 2014 Apr 25 0038 UTC
X-ray Class: X1.3
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Featured image: NASA SDO